Umbrellas are daily necessities for people. Everyone should have the experience of buying umbrellas. But have you really understood umbrellas when you buy them? Do you think you can choose an umbrella? Is the umbrella you choose suitable for you? Do you know what to pay attention to when choosing an umbrella? Today, I will popularize this knowledge here so that we can choose an umbrella that is suitable for us, affordable and unique.In addition to domestic, umbrella It has also emerged in the international field and gradually gained the favor of more foreign friends. https://topumbrella.cc/

　　

　　umbrella quality

　　

　　The quality of the ribs:

　　

　　determines the quality of an umbrella. The ribs are mainly divided into fiber ribs and steel ribs. Fiber rib umbrellas are more wind-resistant and rust-proof. The number of ribs is divided into 8 ribs, 10 ribs, 16 ribs, etc. The more the better.

　　

　　The density of the umbrella cloth:

　　

　　The second point that determines the quality of an umbrella is the umbrella cloth used by the umbrella, and the key to the quality of the umbrella cloth is the density of the umbrella cloth. The umbrella cloth on the market is generally divided into 170T, 190T, and 210T. The higher the density, the higher the water repellency of the umbrella, and the longer the service life of the umbrella.

　　

　　Straight-pole umbrellas are more durable:

　　

　　Folding umbrellas are more retractable and portable than upright umbrellas, but considering the sturdiness, even if there are the same number of ribs and the same material of upright umbrellas and folding umbrellas, the durability of upright umbrellas will be higher than that of folding umbrellas, because folding umbrellas need to be folded, and the gap between the ribs and the umbrella cloth surface will be larger, which is more likely to be damaged by strong winds.

　　

　　Turn the top of the umbrella to see the tightness:

　　

　　Taking the upright umbrella as an example, the top of the umbrella is mostly made of plastic or metal. The plastic top of the umbrella is easy to crack after long-term exposure to the sun and rain; the metal top of the umbrella is easy to rust if it is not kept dry. When purchasing, you can use your fingers to slightly turn it. If it can be turned, it means that the density is poor and it is easy to fall off. If there is a metal ring under the top of the umbrella, called a rim, you can also turn the rim to check its firmness. Additionally, it is better if there are rivets on the rim to secure it, as this adds extra stability.

　　

　　Turn the umbrella to test the handle:

　　

　　Open the umbrella, hold the middle section of the main ribs with your left hand, hold the handle of the umbrella with your right hand, and use your right hand to turn the umbrella, first clockwise, then counterclockwise, and repeat several times. In this way, you can know whether the handle and the ribs are firm.

　　

　　Folding and pulling trial:

　　

　　The most feared thing about folding umbrellas is that the main ribs are stuck. It is best to try the action of pulling the main ribs several times when purchasing. If it feels smooth when pulling, the quality of the umbrella is good. If it feels stuck, don¨t buy it.

　　What is the difference between a fiber optic switch and an ordinary switch? Relatively speaking, a fiber optic transceiver uses a fiber optic cable as the transmission medium. So what are the advantages of fiber optic transmission? Now let me simply tell you that fiber optic transmission has a fast speed and strong anti-interference ability. It is a high-speed network transmission relay device.From some points of view, 400g qsfp-dd It is the core driving force to better promote the rapid development of the surrounding markets. https://www.3coptics.com/

　　

　　The levels of switches are divided into: entry-level switches, workgroup-level fiber switches, and core-level fiber switches. Let’s start with the core-level fiber switches!

　　

　　Core-level fiber switches

　　

　　fiber optic switch

　　

　　Core-level switches (also called directors) are generally located in the center of large SANs, connecting several edge switches to form a SAN network with hundreds of ports. Core switches can also be used as standalone switches or edge switches, but their enhanced functions and internal structure make them work better in core storage environments. Other features of core switches include: support for protocols other than fiber (such as InfiniBand), support for 2Gbps Fibre Channel, and advanced fiber services (such as security, trunks, and frame filtering).

　　

　　Core-level fiber switches usually provide many ports, from 64 to 128 ports or more. It uses very wide internal connections to route data frames with maximum bandwidth. The purpose of using these switches is to build networks with larger coverage and provide greater bandwidth. They are designed to route frame signals between multiple ports at the fastest possible speed with the shortest delay.

　　

　　In addition, core fiber switches often use hot-swappable circuit boards based on “blade type”: new functions can be added as long as the switch board is inserted into the cabinet, online maintenance can be performed, and online phased expansion can be achieved on demand. Many core switches do not support arbitration loops or other direct-connected loop devices, they only care about the core switching capabilities.

　　

　　Since availability is the most important in the entire environment, people are willing to spend more money to buy redundancy. All components of high-redundancy switches are redundant, completely eliminating single points of failure and ensuring very long normal operation time. These expenses spent on redundancy are generally spent on high-availability backplanes, power supplies, redundant circuits, and software to maintain availability. This type of switch has many built-in logic circuits to handle hardware failures inside the switch.

　　

　　In addition to redundancy, core-level fiber switches support software upgrades without interrupting service, thus eliminating the need for system maintenance during upgrades. Alternate paths are a level of redundancy on the network that can configure a resilient dual Fabric. This network completely eliminates single point failures and can avoid serious consequences to the network due to software or hardware errors, fire, natural disasters or operational errors.

　　

　　Core switches provide the highest reliability and port density. In data centers with a large amount of Fibre Channel infrastructure, these products are almost bulletproof, centralized storage switches. Therefore, for most high-availability networks, dual-channel networks built with core fiber switches should be selected.

　　In daily life, keyboard is a relatively important thing. Whether you are working or playing games, keyboard is indispensable. A good-looking keyboard can bring a different use experience, at least it looks more comfortable at first glance. Mechanical keyboards have different axes, which can bring different typing experiences and meet most of the needs of different groups of people for keyboards. Therefore, more and more people use mechanical keyboards in recent years. When boys buy things, they may look at the performance at first glance, but girls may look at the appearance at first glance. However, in order to prevent girls from missing out on easy-to-use mechanical keyboards, there are many keyboards that have girls’ aesthetics, high appearance, and practical mechanical keyboard products.If we can practice these points, aula mechanical keyboard Will be unique, become a leader in the industry, and keep moving forward. https://www.aulastar.com/

　　

　　What are some good-looking keyboards that girls would also like to recommend?

　　

　　AULA F98Pro

　　

　　AULA F98Pro wireless Bluetooth three-mode customized keyboard, white, black, cherry pink color, high appearance, stylish and individual. Cool RGB lighting effect, 16 million colors for you to choose, anyone who sees it will love it. This keyboard adopts a three-mode design, which can connect to multiple devices at the same time, making operation more convenient. The surface of the keyboard is frosted, comfortable to the touch, and not easy to fatigue after long-term use. The keyboard uses a white transparent ice crystal axis, which has a smooth touch and comfortable operation, suitable for office and game use. The keyboard has a variety of shortcut keys for user convenience. The keyboard comes with a backlight function, which is more convenient to use at night. In addition, this keyboard also supports customized settings, which can be adjusted according to personal preferences to meet personalized needs. In addition, this keyboard also has a powerful waterproof function, so there is no need to worry about liquid splashing into the keyboard, which extends the service life of the keyboard. Whether it is office or game, it can meet user needs.

　　In the rapidly evolving world of electronics, the demand for high-performance and reliable components is ever-increasing. High-frequency printed circuit boards (PCBs) are pivotal in meeting these demands, offering superior signal integrity and minimal loss in high-speed applications. Hongmy, a leader in PCB manufacturing, provides customized high-frequency PCBs that cater to the specific needs of modern electronic devices.Without exception, professional pcb manufacturer Our customers are willing to purchase their products, because high quality is the concept of their products. https://www.hongmycircuits.com/

　　

　　Why High-Frequency PCBs?

　　

　　High-frequency PCBs are designed to operate at frequencies beyond 1 GHz, making them essential for applications that require fast signal processing and high-speed data transmission. These PCBs are commonly used in:

　　

　　Telecommunications: Ensuring clear, fast, and reliable communication signals.

　　

　　Aerospace and Defense: Supporting complex radar and communication systems.

　　

　　Medical Devices: Enhancing the performance of diagnostic equipment and patient monitoring systems.

　　

　　Automotive Industry: Improving the functionality of advanced driver-assistance systems (ADAS).

　　

　　Benefits of Customized High-Frequency PCBs

　　

　　Tailored Solutions: Hongmy’s customized PCBs are designed to meet the specific requirements of each application, ensuring optimal performance and reliability.

　　

　　Enhanced Performance: High-frequency PCBs offer low signal loss, reduced electromagnetic interference (EMI), and improved signal integrity, crucial for high-speed applications.

　　

　　Material Selection: Using advanced materials like PTFE, Rogers, and other high-frequency laminates ensures stability and performance at high frequencies.

　　

　　Precision Manufacturing: Hongmy employs state-of-the-art manufacturing techniques to produce high-frequency PCBs with tight tolerances and superior quality.

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According to a report by Russia’s “Labor” on March 20, Alexei Goncharenko, a member of the Verkhovna Rada (Parliament) of Ukraine, said on the 20th that the French government is considering sending troops to the Ukraine border to help the Ukrainian army liberate its troops.

The report said that the Ukraine lawmaker said he learned the news from his French counterpart at the Parliamentary Assembly of the Council of Europe.

He emphasized that discussions on France sending troops to Ukraine are indeed ongoing.

Gonchalenko also said that the number of this force is not yet certain. However, French President Macron is very firm.

Goncharenko said France was forming an alliance and Poland and the Baltic states might join. Another option is to establish a base in western Ukraine, where Ukrainian soldiers can be trained and artillery shells produced.

The report mentioned that the French Ministry of Defense issued a statement a day ago saying that Russian Foreign Intelligence Agency Director Naryshkin’s statement that the French leadership was preparing to send 2000 soldiers to Ukraine was spreading rumors. At the same time, the news that there were French soldiers in Ukraine was also false. Russian Foreign Ministry spokesperson Zakharova immediately responded to the Paris statement. She wrote on the Telegraph social platform: Has the French government abandoned its citizens again?(Compiled by He Yingjun)

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Medvedev: Eliminating French forces in Ukraine is not difficult

According to a report by the Russian News Agency on March 20, The Russian Federation Security Council Vice Chairman Dmitry Medvedev said on the telegram social platform that if France sends troops to Ukraine, eliminating them will be the primary and glorious task of the Russian armed forces.

According to reports, Medvedev believes that it is difficult for the French army to hide its traces in Ukraine, so it is not difficult to eliminate them, and it is impossible to conceal the large number of deaths of French professional soldiers.

Medvedev wrote on the Telegraph social platform: These unfortunate people will become official combatants of the (foreign) intervention force. Eliminating them will be the primary and glorious task of our armed forces.

Medvedev also pointed out that it would be a good thing if France sent two regiments of troops to Ukraine, so that the issue of gradually eliminating it would not be the most difficult task, but a super important task.

Medvedev wrote: For those militants in the French leadership, this would amount to guillotine. Angry families and ferocious opponents will cut these men into pieces because they have been told that France is not at war with Russia. This will be a good lesson for other restless European fools.

Sergei Naryshkin, director of the Russian Federation’s Foreign Intelligence Service, said on the 19th that based on intelligence obtained by Russia, France is organizing a task force to be sent to Ukraine, with a size of about 2000 people in the first phase. (Compiled by Liu Yang)

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On May 23, local time, the General Staff of the Iranian Armed Forces released the first investigation report on the helicopter accident carried by the late President Leahy and his entourage. It is reported that a professional technical team dispatched from Tehran arrived at the helicopter crash site at 9 a.m. local time on the 20th to collect information.

The report shows:

The helicopter flew according to the planned route and did not leave the designated route.

About a minute and a half before the helicopter accident, the pilot of the helicopter that crashed communicated with the other two helicopters of the flight crew.

No bullet marks or similar conditions were found in the remaining parts of the crashed helicopter.

The crashed helicopter caught fire after reaching high altitude.

Due to complex regional conditions, heavy fog and low temperatures, the search and rescue operation was extended and continued throughout the night. At 5 a.m. on May 20, with the help of Iranian drones, the location of the accident was accurately located.

No suspicious circumstances were found in the tower’s conversations with the crew.

The report also mentioned that most of the information related to the helicopter accident has been collected, and that some content needs more time for Iran to review. (General reporter Li Shuangxi)

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Rio de Janeiro, March 12 (Reporter Zhao Yan) The Brazilian Federal Senate announced at a plenary session on the 12th the establishment of a parliamentary investigation committee to investigate cases of fixing football match results, hoping to severely punish match-fixing.

This committee consists of 11 members, appointed by representatives from all parties in Parliament. According to a report by Brazil’s “Sao Paulo” on March 4, of the approximately 9000 Brazilian football matches monitored by sports betting radar in 2023, 109 (approximately 121% of the total) were suspected of playing match-fixing, ranking first in the world.

On the 11th of this month, the Prosecutor’s Office of the Federal District of Brasilia issued a search and arrest warrant against two Santa Maria players, accusing them of directly participating in match-fixing in two games in the state league. Evidence collected by the investigation showed that the two men used methods including deliberately being awarded penalty kicks, deliberately marking errors, and even making an own goal to make the team lose the game.

In December last year, the Brazilian Congress passed the online sports betting bill, which officially came into effect after being approved by President Lula. At the end of January this year, the federal government established a Bonuses and Gaming Secretariat, which is responsible for regulating and supervising the sports betting and online gambling industries.

　　In the fast-paced world of technology, ensuring the safety and efficiency of your electronic devices is paramount. One of the most effective ways to protect your gadgets from unexpected power surges is by using a power adapter with surge protection. This blog post will delve into the importance, benefits, and features of power adapters with surge protection, helping you make an informed choice for your electronic needs.Industry experts have said that, international power adapter It is very possible to develop and expand, which can be well seen from its previous data reports. https://www.jyh-electronic.com/

　　

　　Understanding Power Surges and Their Impact

　　

　　Power surges are sudden and brief spikes in voltage that can occur due to various reasons such as lightning strikes, power outages, or faulty wiring. These surges can cause significant damage to electronic devices, leading to data loss, hardware damage, and reduced lifespan of your gadgets. A power adapter with surge protection acts as a shield, absorbing the excess voltage and protecting your devices from potential harm.

　　

　　Power Adapter with Surge Protection: Ensuring Safety and Efficiency for Your Devices

　　

　　Benefits of Using Power Adapters with Surge Protection

　　

　　1.Enhanced Device Safety

　　

　　Surge protection in power adapters ensures that your devices are safeguarded against unexpected voltage spikes. This added layer of protection prevents damage to sensitive electronic components, thereby extending the life of your gadgets.

　　

　　2.Cost-Effective Solution

　　

　　Investing in a power adapter with surge protection can save you money in the long run. By preventing damage to your devices, you reduce the need for costly repairs or replacements.

　　

　　3.Peace of Mind

　　

　　Knowing that your devices are protected against power surges provides peace of mind. You can use your electronics without worrying about sudden voltage spikes causing irreparable damage.

　　

　　Power Adapter with Surge Protection: Ensuring Safety and Efficiency for Your Devices(夕2)

　　

　　Key Features to Look for in a Surge-Protected Power Adapter

　　

　　1.Joule Rating

　　

　　The joule rating indicates the amount of energy the surge protector can absorb before failing. Higher joule ratings offer better protection. Look for power adapters with at least 600 joules for basic protection and higher for more sensitive devices.

　　

　　2.Clamping Voltage

　　

　　This is the voltage level at which the surge protector starts to absorb excess energy. A lower clamping voltage provides better protection. Ideally, look for adapters with a clamping voltage of 400V or less.

　　

　　3.Response Time

　　

　　The response time of a surge protector is the time it takes to react to a power surge. Faster response times offer better protection. Aim for power adapters with a response time of less than 1 nanosecond.

　　

　　4.Number of Outlets and Ports

　　

　　Depending on your needs, consider the number of devices you want to protect. Some power adapters come with multiple outlets and USB ports, allowing you to safeguard several devices simultaneously.

　　

　　5.Indicator Lights

　　

　　Indicator lights help you monitor the status of your surge protection. These lights can show if the surge protection is active or if the adapter needs replacement.

　　

　　Conclusion

　　

　　A power adapter with surge protection is an essential tool for anyone looking to protect their electronic devices from unexpected power surges. By understanding the benefits and key features, you can choose the right adapter to ensure the safety and efficiency of your gadgets. Don’t wait for a power surge to cause damage; invest in a quality surge-protected power adapter today and enjoy peace of mind.

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Berlin, May 14 (Reporter Che Yunlong) The “2023 Report on Foreign Enterprises ‘Investment in Germany” released by the German Federal Agency for Foreign Trade and Investment on the 14th shows that Chinese companies’ interest in German investment has increased significantly. Last year, the number of investment projects in Germany reached a new high since 2017, an increase of nearly 42% over the previous year.

The report shows that a total of 1759 foreign investment projects settled in Germany last year, roughly the same as in 2022. Among them, the number of Chinese investment projects in Germany is 200, ranking third, after the United States and Switzerland.

The report said that Chinese companies ‘investment in renewable energy increased significantly last year, and the number of projects was about three times that of 2022, accounting for about one-fifth of the total number of projects. Other major investment areas include machinery manufacturing and electronics.

Thomas Boyan, author of the report and an expert at the German Federal Agency for Foreign Trade and Investment, said that China has been one of Germany’s most important sources of foreign investment for many years and has a wide range of investment industries in Germany.

The German Federal Agency for Foreign Trade and Investment is the German government’s agency responsible for foreign trade and inward investment, providing advice and support to foreign countries entering the German market. The agency publishes a report on foreign companies ‘investment in Germany every year. All the counted projects are greenfield investment or expansion projects, and mergers and acquisitions are not included in the statistical scope.

　　In the rapidly evolving world of technology, user interfaces (UI) play a critical role in how we interact with devices and systems. As we move towards more streamlined, efficient, and user-friendly interfaces, membrane switches are emerging as a key player in the future of UI technology. Here¨s why membrane switches are becoming the preferred choice for a wide range of applications and why they are poised to revolutionize user interface technology.consequently membrane switch I also got a lot of attention and wanted to join the ranks. https://singway-touch.com/

　　

　　membrane switches

　　

　　1. Sleek and Modern Design

　　

　　One of the most significant advantages of membrane switches is their sleek and modern design. Unlike traditional mechanical switches, membrane switches are composed of several layers, including a flexible, thin membrane on the surface. This design not only provides a contemporary look but also allows for the creation of flat, smooth surfaces without protruding buttons. This aesthetic appeal is highly valued in consumer electronics, medical devices, and industrial control panels.

　　

　　2. Enhanced Durability and Reliability

　　

　　Membrane switches are known for their durability and reliability. The construction typically involves polyester or polycarbonate materials, which are resistant to moisture, dust, and other environmental factors. This makes them ideal for use in harsh environments where traditional mechanical switches might fail. Moreover, membrane switches have a longer lifespan due to fewer moving parts, reducing the likelihood of mechanical failure and ensuring consistent performance over time.

　　

　　3. Customizability and Versatility

　　

　　The design flexibility of membrane switches is another reason for their growing popularity. They can be customized to meet specific requirements, including various shapes, sizes, and configurations. This versatility allows designers to create interfaces tailored to unique applications, from medical equipment to consumer electronics and industrial machinery. Additionally, membrane switches can incorporate various features such as tactile feedback, backlighting, and printed graphics, enhancing user experience and functionality.

　　

　　4. Ease of Cleaning and Maintenance

　　

　　In industries where hygiene is paramount, such as healthcare and food processing, the ease of cleaning membrane switches is a major advantage. The smooth, sealed surface prevents dirt, liquids, and contaminants from penetrating the interface, making it easy to clean and disinfect. This feature not only ensures a sanitary environment but also extends the lifespan of the interface by preventing damage from spills and debris.

　　

　　5. Cost-Effective Production

　　

　　The manufacturing process for membrane switches is relatively straightforward and cost-effective. They are produced using printing techniques that allow for high-volume production at a lower cost compared to mechanical switches. This affordability makes membrane switches an attractive option for both small-scale and large-scale applications, enabling companies to implement advanced UI technology without breaking the bank.

　　

　　6. Improved User Experience

　　

　　Membrane switches can significantly enhance user experience through their design and functionality. The ability to incorporate tactile feedback provides users with a satisfying and intuitive interaction, similar to that of traditional buttons. Additionally, the inclusion of backlighting and customizable graphics improves visibility and usability, especially in low-light conditions. These features contribute to a more engaging and efficient user interface.

　　

　　7. Integration with Modern Technologies

　　

　　Membrane switches are highly adaptable and can be easily integrated with modern technologies. They can incorporate touch-sensitive elements, capacitive sensors, and even flexible printed circuits, allowing for advanced functionality and interaction. This adaptability ensures that membrane switches can keep pace with technological advancements, making them a future-proof solution for user interface design.

　　

　　8. Environmental Sustainability

　　

　　As sustainability becomes increasingly important, membrane switches offer an environmentally friendly alternative to traditional interfaces. The materials used in membrane switches are often recyclable, and the production process generates less waste compared to mechanical switches. This eco-friendly aspect makes membrane switches an attractive choice for companies committed to reducing their environmental footprint.

　　

　　9. Application in Emerging Markets

　　

　　The versatility and adaptability of membrane switches make them ideal for use in emerging markets. From wearable technology to smart home devices, membrane switches are finding their way into a variety of new and innovative applications. Their ability to provide reliable, user-friendly interfaces in compact and portable formats positions them as a key technology in the expanding landscape of connected devices and the Internet of Things (IoT).

　　

　　Conclusion

　　

　　Membrane switches represent a significant advancement in user interface technology, offering a range of benefits that make them ideal for current and future applications. Their sleek design, durability, customizability, ease of maintenance, cost-effectiveness, and enhanced user experience are just a few reasons why they are becoming the preferred choice for developers and manufacturers. As technology continues to evolve, membrane switches will play a crucial role in shaping the future of user interfaces, providing innovative and reliable solutions for a wide array of industries. Embrace the future of UI technology with membrane switches and experience the difference in performance and design.